Fixed Wing Single Engine · ALLISON 250 SER · as of Sep 21, 2026
Resources Manufacturer · Maule Air ↗ Engine · Rolls-Royce M250 (Allison) ↗ Search FAA TCDS ↗
Distribution · currently registered
By state (top 10)
- AK 100.0% 1
By decade of manufacture
- 2000s 100.0% 1
NTSB records
No NTSB-recorded events match MAULE MT-7-420 in the indexed corpus.
Airworthiness directives
10 directive(s) on file. Showing the most recent 10.
- Aug 17, 2020
Airworthiness Directives; Aspen Avionics, Inc.
The FAA is correcting an airworthiness directive (AD) that published in the Federal Register. The AD applies to certain Aspen Avionics, Inc., Evolution Flight Display (EFD) EFD1000 Emergency Backup Display, EFD1000 Multi-Function Display, and EFD1000 Primary Flight Display systems installed on various airplanes. As pu…
- Jul 31, 2020
Airworthiness Directives; Aspen Avionics, Inc.
The FAA is adopting a new airworthiness directive (AD) for certain Aspen Avionics, Inc., Evolution Flight Display (EFD) EFD1000 Emergency Backup Display, EFD1000 Multi-Function Display, and EFD1000 Primary Flight Display systems installed on various airplanes. This AD imposes operating restrictions on these display sy…
- Jan 23, 2019
Airworthiness Directives; Aspen Avionics, Inc., Evolution Flight Display Units
We are adopting a new airworthiness directive (AD) for certain Aspen Avionics, Inc. (Aspen), Evolution Flight Display (EFD) EFD1000 Primary Flight Display (PFD), EFD1000 Multi-Function Display (MFD), EFD1000 Emergency Backup Display (EBD), and EFD500 MFD units installed on various aircraft. This AD requires disabling…
- Nov 25, 2008
Airworthiness Directives; Maule Aerospace Technology, Inc. M-4, M-5, M-6, and M-7 Series and Model M-8-235 Airplanes
The FAA adopts a new airworthiness directive (AD) for certain Maule Aerospace Technology, Inc. M-4, M-5, M-6, and M-7 series and Model M-8-235 airplanes. This AD requires you to paint the top of the rear elevator control horn, the elevator control cable end attached to the top of the rear control horn, the bottom of t…
- Aug 19, 2008
Airworthiness Directives; Maule Aerospace Technology, Inc. Models M-4, M-5, M-6, M-7, and M-8 Series Airplanes
We propose to adopt a new airworthiness directive (AD) for certain Maule Aerospace Technology, Inc. Models M-4, M-5, M-6, M-7, and M-8 series airplanes. This proposed AD would require you to paint the top of the rear elevator control horn, the elevator control cable end attached to the top of the rear control horn, th…
- Aug 3, 2006
Airworthiness Directives; Rolls-Royce Corporation (Formerly Allison Engine Company, Allison Gas Turbine Division, and Detroit Diesel Allison) (RRC) 250-B and 250-C Series Turboshaft and Turboprop Engines
The FAA is superseding an existing airworthiness directive (AD) for RRC 250-B and 250-C series turboshaft and turboprop engines. That AD currently requires a onetime inspection of the fuel nozzle screen for contamination, and if contamination is found, inspection and cleaning of the entire aircraft fuel system before…
- Jan 19, 2005
Airworthiness Directives; GARMIN International Inc. GTX 33, GTX 33D, GTX 330, and GTX 330D Mode S Transponders
The FAA is adopting a new airworthiness directive (AD) to supersede Airworthiness Directive 2004-10-15, which applies to certain GTX 330 and GTX 330D Mode S transponders that are installed on airplanes. AD 2004-10-15 currently requires you to install GTX 330/330D Software Upgrade Version 3.03, 3.04, or 3.05. This AD a…
- Oct 7, 2004
Airworthiness Directives; GARMIN International Inc. GTX 33, GTX 33D, GTX 330, and GTX 330D Mode S Transponders
The FAA proposes to supersede Airworthiness Directive (AD) 2004-10-15, which applies to certain GTX 330 and GTX 330D Mode S transponders that are installed on airplanes. AD 2004-10-15 currently requires you to install GTX 330/330D Software Upgrade Version 3.03, 3.04, or 3.05. This proposed AD applies to certain GTX 33…
- May 21, 2004
Airworthiness Directives; GARMIN International Inc. GTX 330 Mode S Transponders and GTX 330D Diversity Mode S Transponders
The FAA adopts a new airworthiness directive (AD) for certain GARMIN International Inc. GTX 330/GTX 330D Mode S transponders that are installed on aircraft. This AD requires you to install GTX 330/330D Software Upgrade Version 3.03, 3.04, or 3.05. This AD is the result of observations that the GTX 330 and GTX 330D may…
- Dec 30, 2003
Airworthiness Directives; GARMIN International Inc. GTX 330 Mode S Transponders and GTX 330D Diversity Mode S Transponders
The FAA proposes to adopt a new airworthiness directive (AD) for certain GARMIN International Inc. GTX 330/GTX 330D Mode S transponders. This proposed AD would require you to install GTX 330/ 330D Software Upgrade Version 3.03. This proposed AD is the result of observations that the GTX 330 and GTX 330D may detect, fr…
Type certificate data sheets · 1 match in the FAA catalog
- 3A23 Maule Aerospace Technology Inc. Historical Rev 32 · 10/14/2015
Models: M-5-220C, Bee Dee M-4, MX-7-160C, M-7-235B + 47 more
Supplemental type certificates · 363 on file
- 03/03/2026 STC SA02511SE Installation of replacement fuel quantity indicator sending unit(s) CiES Inc. DRS ↗
- 12/09/2025 STC SA01005DE Installation of a EarthX ETX900-TSO Lithium battery EarthX Inc. DRS ↗
- 07/24/2025 STC SA02511SE Installation of replacement fuel quantity indicator sending unit(s) CiES Inc. DRS ↗
- 07/21/2025 STC SA02511SE Installation of replacement fuel quantity indicator sending unit(s) CiES Inc. DRS ↗
- 05/27/2025 STC SA5581SW Installation of ALCOR true-flow/ totalizer system Alcor LLC DRS ↗
- 05/27/2025 STC SA00081NY Installation of Iceman Aviation Supplies, Inc. Carburetor Ice Detector. Alcor LLC DRS ↗
- 04/01/2025 STC SA02738CH (PAGE 1) Installation of L-3 Communications Avionics Systems Acron Aviation Inc. DRS ↗
- 04/01/2025 STC SA04046CH Page 1 Installation of L-3 GENESIS (TM) Electronic Standby Instrument System (ESI-500/MAG-500) Acron Aviation Inc. DRS ↗
- 03/01/2025 STC SA7965SW Application of fabric and polyurethane finishing system. Shady Aviation LLC DRS ↗
- 11/22/2024 STC SA04378CH Installation of an engine modified per STC SE04349CH SureFly Partners Ltd. DRS ↗
- 10/23/2024 STC SA39CH Installation of an Amphibian Landing Gear Position Advisory System/Laser Gear Advisory System Wipaire Inc. DRS ↗
- 09/26/2024 STC SA02594SE SkyView HDX Instrumentation and Autopilot System manufactured Dynon Avionics DRS ↗
- 08/27/2024 STC SA04837NY Installation of AeroLED's Holdings, LLC., position lights, navigation lights, strobe lights and beacon lights AeroLED's Holdings, LLC DRS ↗
- 08/27/2024 STC SA02386AK Replacement of existing landing and/or taxi light reflector and bulbs with Light Emitting Diode (LED) lighting systems AeroLED's Holding LLC DRS ↗
- 08/21/2024 STC SA01757WI To allow the use of UL91 or UL94 (minimum) grade aviation fuel Swift Fuels LLC DRS ↗
- 06/13/2024 STC SA02511SE Installation of replacement fuel quantity indicator sending unit(s) CiES Inc. DRS ↗
- 06/13/2024 STC SA02511SE (1 OF 3) Installation of replacement fuel quantity indicator sending unit(s) CiES Inc. DRS ↗
- 06/13/2024 STC SA02511SE (1 OF 2) Installation of replacement fuel quantity indicator sending unit(s) CiES Inc. DRS ↗
- 02/02/2024 STC SA02658SE (1 OF 2) Installation of Garmin GI 275 Multi-Function Display System Garmin International Inc. DRS ↗
- 12/12/2023 STC SA02571SE (PAGE 1) Installation of Garmin G500/G600 TXi Integrated Avionics System (Primary Flight Display, Multi-Function Display, and Engine Indicating System Display). Garmin International Inc. DRS ↗
- 08/16/2023 STC SA02576AK Installation of Cleveland and ABI, LLC Wheel and Brake Kits ABI LLC DRS ↗
- 08/10/2023 STC SA02019WI Installation of the Trig Avionics TX56, TX56A, TX57, or TX57A VHF Nav-Com Radio. Peregrine DRS ↗
- 07/19/2023 STC SA04378CH Installation of an engine modified per STC SE04349CH on an aircraft listed on FAA approved model list #SA04378CH dated 1/13/19 or later FAA approved revision, IAW SureFly installat… SureFly Partners Ltd. DRS ↗
- 05/22/2023 STC SA01435LA Installation of engines modified with Firewall Forward Technologies LLC modified camshaft Centri-Lube Technologies LLC DRS ↗
- 04/05/2023 STC SA00756DE Installation of Automatic Dependent Surveillance Broadcast (ADS-B) Out Equipment using a Trig Avionics TT22 Transponder and an approved Global Positioning System (GPS) Position Se… Peregrine DRS ↗
- 04/04/2023 STC SA11137SC Installation of Plane-Power ALT-FLX alternator Hartzell Engine Technologies, LLC DRS ↗
- 02/09/2023 STC SA01606CH Installation of alternate electro-hydraulic power pack system for operation of main wheel skis. F.Atlee Dodge Aircraft Services DRS ↗
- 01/10/2023 STC SA04378CH Installation of an engine modified per STC SE04349CH on an aircraft listed on FAA approved model list #SA04378CH dated 1/13/19 or later FAA approved revision, IAW SureFly installat… SureFly Partners Ltd DRS ↗
- 12/12/2022 STC SA02738CH (PAGE 1) Installation of L-3 Communications Avionics Systems L3Harris Aviation Products Inc. DRS ↗
- 12/12/2022 STC SA04046CH Page 1 Installation of L-3 GENESIS (TM) Electronic Standby Instrument System (ESI-500/MAG-500) L3Harris Aviation Products Inc. DRS ↗
+ 333 more STCs on file
PMA replacement parts · 5 on file
- ST-495#https://drs.faa.gov/browse/excelExternalWindow/AA0F056AB4A340EC862577FB0062526C.0001## System 60 Two Axis Automatic Flight Guidance System S-TEC Corporation replaces Modification Part
- ST-418#https://drs.faa.gov/browse/excelExternalWindow/4E5910BCF63FC8F98625776D004599C7.0001## System 40/50 Single and Two Axis Automatic Flight Guidance Systems S-TEC Corporation replaces Modification Part
- ST-495#https://drs.faa.gov/browse/excelExternalWindow/EC9F8D4B987C4CFA862575540062BE20.0001## Autopilot S-TEC Corporation replaces Modification Part
- ST-920-L-0001#https://drs.faa.gov/browse/excelExternalWindow/81D1ABEB10B9F616862571BF00616500.0001## S-TEC System 20/30 Automatic Flight Guidance System S-TEC Corporation replaces Modification Part
- ST-920-L-001#https://drs.faa.gov/browse/excelExternalWindow/4C527A162260843F862571BF00613845.0001## S-Tec System 20/30 Automatic Flight Guidance Systems S-TEC Corporation replaces Modification Part
Advisory circulars & Federal Register
Advisory circulars
No ACs explicitly mention this type. Showing universal operating-rule ACs that apply to all aircraft.
Recent Federal Register · Parts 91 & 43
- 2026-09-14 Use of Certain Restricted Category Aircraft for the Transport of Firefighters for Wildfire Suppression FR ↗
- 2026-07-31 Requirements for Interference-Tolerant Radio Altimeter Systems FR ↗
- 2026-07-02 Enabling Supersonic Overland Flight FR ↗
- 2026-07-01 Mechanic Certification: Inspection Rating and Recent Experience Requirements FR ↗
- 2026-06-30 Designation-Restrict the Operation of Unmanned Aircraft in Close Proximity to a Fixed Site Facility; Extension of Comment Period FR ↗
Registered N-numbers · 1
| N-number | St | Year | NTSB | FAA |
|---|---|---|---|---|
| N771KE | AK | 2004 | · | Look up ↗ |
Source — FAA Aircraft Registry
Sources
- FAA Aircraft Registry ↗ Refreshed Apr 27, 2026 Available
- NTSB CAROL ↗ Refreshed Jun 10, 2026 Available
- Federal Register (FAA Airworthiness Directives) ↗ Refreshed Apr 27, 2026 Available